Gnarls Barkley - 'Crazy'

Innovative producer/DJ Danger Mouse and Goodie Mob frontman (and future "The Voice" coach) Cee Lo Green teamed for this funky, infectious oddity that seemingly came out of nowhere and appeared to be destined to be the ultimate jam of 2006. It danced around for seven weeks at No. 2 while Nelly Furtado's already forgotten "Promiscuous" prevented the Barkley Boys from reaching the top spot.

You should've mentioned two extremely popular songs in 2012 that spend many weeks at number 2 without hitting #1 (which really upset me both times)... With Maroon 5 and Wiz Khalifa's "Payphone" spending six non-consecutive weeks at #2, I really wished it would get to #1 (perhaps sales were too weak compared to at first Gotye's "Somebody that I Used to Know" and then Carly Rae Jepsen's "Call Me Maybe" (radio airplay was strong). However, Maroon 5 made a comeback, at the expense of the other #2 hit, with "One More Night" spending nine consecutive weeks at #1 and shutting out PSY's viral hit "Gangnam Style" which spent seven non-consecutive weeks at the runner-up spot, and was a measly 600 chart points (less than 0.1%) away from the top spot in its third week at number one. Such a shame all these songs (including the ones you mentioned) didn't hit the #1 spot, I would have liked to see that...